551247257000 has 256 divisors, whose sum is σ = 1431988346880. Its totient is φ = 196936608000.

The previous prime is 551247256921. The next prime is 551247257003. The reversal of 551247257000 is 752742155.

It is not an unprimeable number, because it can be changed into a prime (551247257003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 370710257 + ... + 370711743.

It is an arithmetic number, because the mean of its divisors is an integer number (5593704480).

Almost surely, 2^551247257000 is an apocalyptic number.

551247257000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 551247257000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715994173440).

551247257000 is an abundant number, since it is smaller than the sum of its proper divisors (880741089880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551247257000 is a wasteful number, since it uses less digits than its factorization.

551247257000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089 (or 2075 counting only the distinct ones).

The product of its (nonzero) digits is 98000, while the sum is 38.

Adding to 551247257000 its reverse (752742155), we get a palindrome (551999999155).

The spelling of 551247257000 in words is "five hundred fifty-one billion, two hundred forty-seven million, two hundred fifty-seven thousand".